EXPERIMENTAL DATA CODEBOOK-------------------------------------------------------------------------

Treatment

Treatment (as factor)

SenatorPro-NuclearMoral
SenatorPro-NuclearUtilitarian
FriendPro-NuclearMoral
FriendPro-NuclearUtilitarian-------------------------------------------------------------------------
ResponseIdQualtrics embedded data field (more information is available on Qualtrics' website at https://www.qualtrics.com/support/survey-platform/data-and-analysis-module/data/download-data/understanding-your-dataset/)Character variable indicating unique respondent ID.-------------------------------------------------------------------------UtilAvg

Average score on Oxford Utilitarianism Scale

Numeric String-------------------------------------------------------------------------
RiskAvgAverage score on DOSPERT Risk assessment
Numeric Strong-------------------------------------------------------------------------
NuclearTheoryPreferred nuclear theory 
1 � Never Ever2 � Existential Deterrence3 - Offense/Defense
4 - Utilitarian

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NuclearTheory_facPreferred nuclear theory (as factor)
Never EverExistential DeterrenceOffense/Defense
Utilitarian

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NuclearRespondent approved of nuclear use during the crisis simulation
0 � No1 � Yes-------------------------------------------------------------------------
outcomeOutcome variable: Minimum threshold for use, pooled sample

Numeric Vector-------------------------------------------------------------------------
outcome_customOutcome variable: Minimum threshold for use, pooled, with custom thresholds

Numeric Vector -------------------------------------------------------------------------
AntiNuclearAllAll reasons to reject nuclear use 1 - No country should ever use nuclear weapons
2 - Using nuclear weapons would be an overreaction
3 - Using nuclear weapons could start a nuclear war
4 - The US homeland was not attacked
5 - The US could defeat the DPRK with conventional weapons
6 - The international community would not support nuclear use
7 - Violence is never justified
8 - We can't make this decision without more information
9 - The response should be handled by the country that was attacked
10 - Damage to the environment would be too great 
11 - Other
12 - Using nuclear weapons would encourage their future use-------------------------------------------------------------------------
AntiNuclearMostMost important reason to reject nuclear use 
1 - No country should ever use nuclear weapons
2 - Using nuclear weapons would be an overreaction
3 - Using nuclear weapons could start a nuclear war
4 - The US homeland was not attacked
5 - The US could defeat the DPRK with conventional weapons
6 - The international community would not support nuclear use
7 - Violence is never justified
8 - We can't make this decision without more information
9 - The response should be handled by the country that was attacked
10 - Damage to the environment would be too great 
11 - Other
12 - Using nuclear weapons would encourage their future use-------------------------------------------------------------------------

ProNuclearAllAll reasons to support nuclear use 
1 � Never: No country should ever use nuclear weapons. (Selecting this answer means you can't select any others)2 - Using nuclear weapons would be a proportionate response
3 - Using nuclear weapons could avoid a larger nuclear war
4 - Using nuclear weapons would avenge the deaths of Americans
5 - The US could not defeat the DPRK without using nuclear weapons
6 - The international community would support nuclear use
7 - It is appropriate to use violence against evil
8 - Destroying North Korea's weapons would make the world a safer place
9 - We have commitments to our allies in South Korea and Japan
10 - There is nothing special about nuclear weapons 
11 - Other
12 - Using nuclear weapons would deter other countries from attacking us-------------------------------------------------------------------------
ProNuclearMostMost important reason to support nuclear use 
1 � Never: No country should ever use nuclear weapons. (Selecting this answer means you can't select any others)2 - Using nuclear weapons would be a proportionate response
3 - Using nuclear weapons could avoid a larger nuclear war
4 - Using nuclear weapons would avenge the deaths of Americans
5 - The US could not defeat the DPRK without using nuclear weapons
6 - The international community would support nuclear use
7 - It is appropriate to use violence against evil
8 - Destroying North Korea's weapons would make the world a safer place
9 - We have commitments to our allies in South Korea and Japan
10 - There is nothing special about nuclear weapons 
11 - Other
12 - Using nuclear weapons would deter other countries from attacking us-------------------------------------------------------------------------
Free ResponseWhat should leaders consider when thinking about nuclear use?

Text String -------------------------------------------------------------------------
Heart AttacksAttention Check 
1 � Passed2,3,4,5,6 - Failed

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Age
Respondent AgeNumeric String-------------------------------------------------------------------------
IdeologyIs the respondent liberal or conservative1 � Very conservative2 � Somewhat conservative3 � Moderate4 � Somewhat liberal5 � Very liberal-------------------------------------------------------------------------
GenderRespondent gender0 � Female1 � Male-------------------------------------------------------------------------
PartyPolitical Party
1 � Republican2 � Democrat
3 - Independent
4 - Other

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PartyCloserCloser to which Political Party
1 � Democratic2 � Republican

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PartyIDPolitical Party (for analysis) 
0 � Republican1 � Democrat-------------------------------------------------------------------------IncomeReported annual income
Numeric string
-------------------------------------------------------------------------MilitaryHave you served in the military?

0 - No
1 - Yes, currently on Active Duty
2 - Yes, currently reserve/national guard
3 - Yes, formerly served
4 - Yes, retired

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QuadrantRisk/Harm Quadrant
1 � Low Harm, Low Risk
2 - Low Harm, High Risk
3 - High Harm, Low Risk
4 - High Harm, High Risk -------------------------------------------------------------------------Quadrant_facQuadrant as factor 
Low Harm, Low Risk
Low Harm, High Risk
High Harm, Low Risk
High Harm, High Risk-------------------------------------------------------------------------